/*  _____ _
 * |_   _| |_  _ _ ___ ___ _ __  __ _
 *   | | | ' \| '_/ -_) -_) '  \/ _` |_
 *   |_| |_||_|_| \___\___|_|_|_\__,_(_)
 *
 * Threema for Android
 * Copyright (c) 2017-2020 Threema GmbH
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

package ch.threema.app.webclient.services;

import androidx.annotation.WorkerThread;

import ch.threema.storage.models.WebClientSessionModel;

/**
 * Handling the WebClient battery status subscription.
 */
@WorkerThread
public interface BatteryStatusService {
	/**
	 * Register a new session that wants battery status updates.
	 */
	void acquire(WebClientSessionModel session);

	/**
	 * Deregister a session that doesn't need battery status updates anymore.
	 * The implementation must not crash if the resources have already been released!
	 */
	void release(WebClientSessionModel session);
}
